Electrochemical performance of single crystalline spinel LiMn ₂O₄ nanowires in an aqueous LiNO₃ solution

Single crystalline cubic spinel LiMn₂O₄ nanowires were synthesized by hydrothermal method and the precursor calcinations. The phase structures and morphologies were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and high-resolution transmission electron microscopy (HRTEM). Galvanostatic charging/discharging cycles of as-prepared LiMn₂O₄ nanowires were performed in an aqueous LiNO₃ solution. The initial discharge capacity of LiMn₂O₄ nanowires was 110 mAh g^-1, and the discharge capacity was still above 100 mAh g^-1 after 56 cycles at 10C-rate, and then 72 mAh g^-1 was registered after 130 cycles. This is the first report of a successful use of single crystalline spinel LiMn ₂O₄ nanowire as cathode material for the aqueous rechargeable lithium battery (ARLB).